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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System.Diagnostics;
using System.Diagnostics.CodeAnalysis;
using System.Dynamic.Utils;
using System.Runtime.CompilerServices;
namespace System.Linq.Expressions.Interpreter
{
internal sealed class DefaultValueInstruction : Instruction
{
private readonly Type _type;
internal DefaultValueInstruction(Type type)
{
Debug.Assert(type.IsValueType);
Debug.Assert(!type.IsNullableType());
_type = type;
}
public override int ProducedStack => 1;
public override string InstructionName => "DefaultValue";
[UnconditionalSuppressMessage("ReflectionAnalysis", "IL2077:UnrecognizedReflectionPattern",
Justification = "_type is a ValueType. You can always get an uninitialized ValueType.")]
public override int Run(InterpretedFrame frame)
{
frame.Push(RuntimeHelpers.GetUninitializedObject(_type));
return 1;
}
public override string ToString() => "DefaultValue " + _type;
}
}
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